docs: async def playing(self):
          """Return what is currently playing."""
          # TODO: This is hack-ish
          if self._setstate is None:
              await self.protocol.start()
  
          # No SET_STATE_MESSAGE received yet, use default
          if self._setstate is None:
              return MrpPlaying(protobuf.SetStateMessage(), None)
  
          return MrpPlaying(self._setstate, self._nowplaying)